Mamoru Suzuhara is an introverted high school student who spends his free time reading up on modern warfare. Upon discovering that his crush, Aya Chiyono, is reluctantly moving away with her family next week, he musters enough courage to ask her to run away with him. Consequently, Mamoru, Aya, and four of their fellow classmates set out and camp in the abandoned Satomi Coal Factory. After enjoying themselves during their first day there, they come to the surprising conclusion that they may not be alone in the factory. Bokura no Nanokakan Sensou, based on the novel of the same name, is a coming-of-age story about an act of rebellion that evolves into a full-out war against the adults. Meanwhile, the children struggle to open up about their feelings and protect what they hold dear. On a hot day right before the summer vacation, all first-year male students of the second class from a junior high school disappear. Was it an accident? A group abduction? In fact, they were hiding in an abandoned factory near the river, and used it as a liberation area to rebel against the adults. The adults are in great confusion by the huge and unexpected operations cooperated by the female students; entangled with real abduction cases, a corrupted mayor election, and even involving parents and television reporters who are thrilled by the liberation broadcast and barricade. The comedy mystery progresses in a light tempo that doesn't give the audience a chance to breathe until the brilliant end that is full of satire.